Inspired by the Sara Shepard (Pretty Little Liars) book series of the same name, The Lying Game follows long-lost twins Emma and Sutton. Separated under mysterious circumstances, Sutton was adopted by the wealthy Mercer family in Phoenix, while Emma grew up in the foster system. When the twins reunite as teenagers, they keep it a secret. While Sutton goes in search of the truth, Emma takes over her life and discovers more secrets and lies than she could have imagined.